DC

Donald F. Constantine

📍 Conroe, TX: #339 of 788 inventorsTop 45%
🗺 Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #2,184,166 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6953068 Acetylene distribution system W. Hord, Ted Royer, Brian Schumann, Craig Robertson, Joseph Burghard 2005-10-11
6823906 Acetylene distribution system W. Hord, Ted Royer, Brian Schumann, Craig Robertson, Joseph Burghard 2004-11-30